Handy composition for composer (5)
I believe the answer is:
haydn
'for composer' is the definition.
(Haydn is an example)
'handy composition' is the wordplay.
'composition' is an anagram indicator.
'handy' anagrammed gives 'HAYDN'.
(Other definitions for haydn that I've seen before include "Joseph -, Austr. composer (Farewell Symphony)" , "Classical composer" , "Barman" , "Austrian composer, d.1809" , "The Seasons composer" .)